IGCSE Physics Tips to Get A*: Expert Strategies

Expert strategies to reach the top grade in IGCSE Physics: how to approach calculations, structured answers, and practical questions for maximum marks.

Mastering Calculation Questions

Calculation questions typically carry 3-4 marks and follow a predictable structure: write the formula, substitute the values with units, perform the calculation, and give the answer with the correct unit. Many students lose marks by skipping the formula or forgetting units. Always rearrange the formula before substituting numbers — this is clearer and less error-prone than rearranging after substitution. If the question asks for an answer to a specific number of significant figures, give the full calculator answer first and then round, showing both. For multi-step calculations, keep full precision in intermediate steps and only round the final answer.

Writing Strong Structured Answers

Structured "explain" and "describe" questions are where many students drop from A* to A. The secret is to use the command word precisely: "state" means give a fact with no explanation, "describe" means say what happens (often referring to a trend or pattern), and "explain" means state what happens and give a reason using physics principles. Use key physics terminology from the syllabus rather than everyday language — examiners mark against specific scientific terms. For 6-mark extended response questions, plan your answer briefly before writing: identify 3 key points, each with a physics reason, and write them as separate clear paragraphs.

Practical and Graph Questions

Practical questions test whether you understand how real experiments work, not just theory. Always mention control variables (what you keep constant), explain how you would reduce errors (repeat measurements and calculate a mean), and describe how to take accurate readings (eye level for meniscus, perpendicular for rulers). For graph questions, use more than half the grid for your plotted points, label both axes with quantity and unit, draw a line of best fit (not dot-to-dot), and identify anomalous points by circling them. When calculating gradient, use a large triangle that covers at least half the line, and show your working clearly with the coordinates you read from the graph.

Getting an A* in IGCSE Physics requires strong technique across calculations, written answers, and practical questions. If you want targeted coaching on the areas holding you back, book a free session to work on real exam papers with expert guidance.